<html>
<head>
<script type="text/javascript">
var gl_canvas;
var gl;

function onLoad() {
  gl_canvas = document.getElementById("glcanvas");
  gl_canvas.addEventListener("webglcontextlost", function(event) {
    event.preventDefault();
  }, false);
  gl_canvas.addEventListener("webglcontextrestored", setupWebGL, false);

  setupWebGL();

  window.domAutomationController.reset = function() {
    window.domAutomationController._loaded = false;
    window.domAutomationController._succeeded = false;
    window.domAutomationController._finished = false;
    window.requestAnimationFrame(succeed);
  };
  window.domAutomationController.send("LOADED");
}

function setupWebGL() {
  // Initialize the GL context.
  gl = gl_canvas.getContext("webgl", {powerPreference: "high-performance"});
  if (gl) {
    gl.clearColor(0.0, 1.0, 0.0, 1.0);
    gl.clearDepth(1);
    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
  }
}

function succeed() {
  if (gl)
    window.domAutomationController.send("SUCCESS");
}
</script>
</head>
<body onload="onLoad()">
  <canvas id="glcanvas" width="640" height="480"></canvas>
</body>
</html>
